3221131232 has 48 divisors (see below), whose sum is σ = 7218916992. Its totient is φ = 1400488320.

The previous prime is 3221131231. The next prime is 3221131271. The reversal of 3221131232 is 2321311223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3221131231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 190838 + ... + 207029.

It is an arithmetic number, because the mean of its divisors is an integer number (150394104).

Almost surely, 2^3221131232 is an apocalyptic number.

3221131232 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

3221131232 is an abundant number, since it is smaller than the sum of its proper divisors (3997785760).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3221131232 is a wasteful number, since it uses less digits than its factorization.

3221131232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397911 (or 397903 counting only the distinct ones).

The product of its digits is 432, while the sum is 20.

The square root of 3221131232 is about 56755.0106334234. The cubic root of 3221131232 is about 1476.8491575072.

Adding to 3221131232 its reverse (2321311223), we get a palindrome (5542442455).

Subtracting from 3221131232 its reverse (2321311223), we obtain a square (899820009 = 29997²).

The spelling of 3221131232 in words is "three billion, two hundred twenty-one million, one hundred thirty-one thousand, two hundred thirty-two".